Many people move their head and therefore their body during the golf swing which can result in a poor strike. It’s hard to know if your head is moving or not without some body watching you. A good way to practice or to check your making the correct movement is to hit balls closing your left eye (right handed golfer). If your head moves the ball will go out of vision which is the tail tell sign that your body/head is moving too much during the back swing. Hit balls ensuring the ball is in vision at all times!